Pavement.



No. 744,878. PATENTBD N0V.24,19o3.,

G. H. SAYREi PAVEMENT.

APPLIATIGN FILED JUNE 22. 1903.

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C. H. SAYRB.

PAVEMENT.

FILED JUNE 22, 1903.

APPLICATION PATENTED NOV. 24, 1903.

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Inventor @har/10m@ ayfe/ Patented November 24, 1903.

Parietti Ormea.

CHARLTON II. SAYRE, OF CAMDEN, NEW JERSEY.

PAVEMENT.

` QECIFICATXON forming part of Letters Patent' No. 744,878, dated November 24, 1903.

Application led June 22, 1903. Serial No. 162,640. (No model.)

T a/ZZ 10720717/ t 71mg/ concern-.-

Be it known that I, CHARLTON H. SAYRE, a

.citizen of the United States, residing at Oamden, in the county of Camden and State of New Jersey, have invented certain new and useful Improvements in Pavements; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

lhis invention relates to improvements in concrete or cement pavements for sidewalks, floors, driveways, and other places.

The object of the invention is to construct a pavement of this character in which the upper or finishing layer of material will be held in tight engagement with the material forining the base and prevented from springing or separating from the same.

A further object is to provide a pavement of cement, concrete, or the like which will be strong and durable, the construction of which will form a support or brace for the curbing and will prevent frost from getting under the pavement, means being also employed in the construction to prevent cracking.

I'Vith these and other objects in view the invention consists of certain novel features of construction, combination, and arrangement of parts, as will be more fully described, and particularly pointed out in the appended claims.

In the drawings, Figure l is a plan View of a section of finished paving. Fig; 2 is a vertical sectional View showing the constructiony of the same at the side of a curbing. Fig. 3 is a top plan View of the under or base material, showing the manner of'scoring or grooving the same. Fig. 4 is a fragmentary sectional view of the same on an enlarged scale. Fig. 5 is a View similar to Fig. 3, showing the arrangement of the woven wire upon the same before the top or iinishing coat is applied.

Referring more particularly to the drawings, l denotes the pavement, which is formed by Iirst laying a bed or base 2, of coarse material, the depth or thickness of which is to be determined by the character of' the ground on which the same is to be laid. At the sides of this bed or base adjacent to the curbings the material is laid to a considerably greater depth to form a wall or abutment, as shown at 3, the outer side of which engages and braces the curb, while the inner side of the wall curves up to and meets the base portion 2, as shown at 2u. This wall or abutment is deep enough to effectually prevent frost from getting in under the base 2 from the sides of the pavement. The upper su rface of the bed orl .which enters the grooves 4, 5, and Gand forms locking tongues or ribs 9, which, owing to the slant of the grooves, will edectually hold the top layerinto engagement with the base, preventing warping or springing of the top layer from the base. The woven wire 7 becomes embedded in the soft plastic material of the top layer and will act as a binder, which will prevent cracking of the top layer after the same has hardened. The tongues 9, formed on the under side of the top layer by the The grooves 4, 5, and 6, serve not only to lock the y top layer to lthe base material, but also serve as strengthening ribs or flanges, which brace and materially strengthen the top or nish ing layer. After the top or finishing layer has been laid and leveled off the same may be blocked off or marked in the customary or any desirable manner.

In a pavement constructed as herein described less material is required than in pavements laid in the common or ordinary way, thus affording a saving in material and also in excavating. In place of the crushed stone and gravel commonly used in mixing material for pavements of this kind, and which is often expensive and difficult to get, I mayin the construction of my pavement substitute crushed hard-coal cinders, the coarser portion of which goesin the base construction, while the iiner particles are used in forming the top layer.

From the foregoing description, taken in connection with the accompanying drawings,

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the construction and operation of the invention will be readilyunderstood without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

l. Apavement consisting of a base of coarse plastic material, the sides of which, adjacent to the street-curbing, are laid to a considerably greater depth than the main portion of the base, and form walls which act as supports and brace said curbing, grooves formed in the upper surface of said base, and a top layer of ner plastic material, said finer mavferial entering said grooves and forming tongues or ribs on the lower face of said top CHARLTON H. SAYRE.

Witnesses:

MARTHA E. FRENCH, LIZZIE H. LAWRENsoN. 

